VCV Rack - A cross-platform modular synthesizer.

Tango Card - Tango Card bundles an awesome catalog of e-gift cards and other e-rewards with easy-to-use technology and expert program support.

Pure Data - Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical...

Tremendous - Tremendous is a customer and employee loyalty platform that allows companies to reward their customers for surveys promotions and referrals.

Voltage Modular - Virtual modular platform designed for flexibility and pro sound

Rybbon - Send digital e-gift cards as marketing incentives or rewards with Rybbon, which integrates with Marketo, HubSpot, SurveyMonkey, and Qualtrics.